Javascript: regex for replace words inside text and not part of the words

I need regex for replac开发者_开发百科e words inside text and not part of the words.

My code that replace 'de' also when it’s part of the word:

str="de degree deep de";
output=str.replace(new RegExp('de','g'),''); 

output==" gree ep "

Output that I need: " degree deep "

What should be regex for get proper output?

str.replace(/\bde\b/g, ''); 

Note that

RegExp('\\bde\\b','g')   // regex object constructor (takes a string as input)

and

/\bde\b/g                // regex literal notation, does not require \ escaping

are the same thing.

The \b denotes a "word boundary". A word boundary is defined as a position where a word character follows a non-word character, or vice versa. A word character is defined as [a-zA-Z0-9_] in JavaScript.

Start-of-string and end-of-string positions can be word boundaries as well, as long as they are followed or preceded by a word character, respectively.

Be aware that the notion of a word character does not work very well outside the realm of the English language.

str="de degree deep de";
output=str.replace(/\bde\b/g,''); 

You can use the reg ex \bde\b.

You can find a working sample here.

The regex character \b act as a word separator. You can find more here.

You should enclose your search characters between \b:

str="de degree deep de";
output=str.replace(/\bde\b/g,''); 

You can use a word boundary as Arun & Tomalak note.

/\bde\b/g

or you can use a space

/de\s/g

http://www.regular-expressions.info/charclass.html